Lynn Soreghan, University of Oklahoma (IMAGE) University of Oklahoma Caption University of Oklahoma post-doctoral researcher Merhdad Sardar Abadi works in Dr. Lynn Soreghan's lab where they use a variety of chemicals to isolate silicate particles and uncover 300-million-year-old dust. Credit University of Oklahoma Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.